We close a feedback loop in which people believe that the universe acts in its own predictable way which is discoverable by science. Which causes the universe to actually be that way. And from then on it becomes unalterable because it no longer cares what anyone thinks. The real problem is that of morals. If the universe can be anything people want, then we had better hurry up and figure out what the best possible world actually is, and then get people to believe it to be that way before we lock it in place as actually being that way.